If you have your old key you can call a local auto lock smith and they will be able to use that key to make another one. If you don't have that key then you need the key number for your car to cut that key for your car. Last option go back to the dealer and they will cut the key for you, it is costly though. Good Luck
Lexus has to hook their computer to it to program the key to both lock/unlock and to start the vehicle.
The Best: http://toy-lex.com/
Lexus proprietary information. i could tell you but then i'd have to hunt you down and kill you.
3 button fob 2003 onwards cr1616
The 1999 Lexus RX300 is equipped with several sensors that monitor various systems within the vehicle, including the engine, transmission, and safety features. Key sensors typically include oxygen sensors, mass airflow sensors, throttle position sensors, and various temperature sensors. In total, there are around 10 to 15 sensors throughout the vehicle, depending on the specific configuration and options. For precise details, consulting the vehicle’s service manual or manufacturer specifications is recommended.
To get replacement keys for a 2002 Lexus RX 300, you can visit a local Lexus dealership, where they can cut and program a new key for you. Alternatively, you can also check with an automotive locksmith who specializes in key fob programming. Another option is to order a replacement key online, but ensure it is compatible and comes with programming instructions. Always have your vehicle's VIN handy for reference.
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To reprogram a Lexus RX300 key fob, first, sit in the vehicle and close all doors. Insert the key into the ignition and turn it to the "ON" position without starting the engine, then turn it back to "OFF." Repeat this process twice, then turn the ignition back to "ON" a final time. Press and hold the "lock" button on the key fob for a few seconds, and this should reprogram the fob. If this doesn't work, consult the owner's manual or a professional locksmith for assistance.
Car alarm in Lexus ES300 started going off at random when car was parked, not running. I changed the key fob battery (flat watch battery) with a new battery and it fixed the problem.
go to the dealer
Dealer, locksmith............
From SAAB., Your nearest dealer can get a key to match your barrel.